Implementation of nearest-neighbor searching in an online chemical structure search system. - Peter Willett 002; Vivienne Winterman; David Bawden (J. Chem. Inf. Comput. Sci., 1986)

Implementation of nonhierarchic cluster analysis methods in chemical information systems: selection of compounds for biological testing and clustering of substructure search output. - Peter Willett 002; Vivienne Winterman; David Bawden (J. Chem. Inf. Comput. Sci., 1986)